.btn0{
    width: 60px;
    height: 60px;
    margin-top: 20px;
    margin-left: 5px;
    margin-right: 5px;
    font-size: 30px;
    font-weight: bold;
    border-radius: 40px;
    background-color: #2f3b44;
    color: white;
    border: 0;

}
.btn1{
    width: 60px;
    height: 60px;
    margin-top: 20px;
    margin-left: 5px;
    margin-right: 5px;
    font-size: 25px;
    border-radius: 40px;
    background-color: #7992a2;
    border: 0;
}
.btn2{
    width: 60px;
    height: 60px;
    margin-top: 20px;
    margin-left: 5px;
    margin-right: 5px;
    font-size: 30px;
    font-weight: bold;
    border-radius: 40px;
    background-color: #dcae18;
    color: white;
    border: 0;
}
.btn3{
    width: 135px;
    height: 60px;
    margin-top: 20px;
    margin-left: 5px;
    margin-right: 5px;
    font-size: 30px;
    font-weight: bold;
    border-radius: 40px;
    background-color: #2f3b44;
    color: white;
    text-align: left;
    border: 0;
}
#mainbody{
    border-radius: 10px;
    border:solid 2px;
    width: 320px;
    height: 590px;
    margin: 50px auto auto;
    background-color: #1c1616; 
}
form{
    margin-left: 10px;
}
#res{
    color: white;
    text-align: right;
    clear: left;
    font-size: 50px;
    margin-right: 38px;
    margin-bottom: -20px;
    margin-top: 130px;
}
body{
    background-image: url("2.jpeg");
    background-repeat: repeat;
    background-size: cover;
}
#topic{
    color: white;
    text-align: center;
}